openai/gpt-2 — reverse-engineered prompt

Build me a simple Python research project for GPT 2 like the original OpenAI release. I want to be able to download the public model files, load a chosen model size, and generate synthetic text from a prompt or from nothing so I can experiment with how the model writes. Include clear setup instructions, requirements, and a couple of runnable commands for CPU and GPU, with Docker options if that is easiest. Please keep it oriented toward researchers and engineers rather than a polished app.

Add a short model card or notes page that explains the important caveats in plain English: the text can be biased, inaccurate, incoherent, and should be labeled as machine generated before sharing. Include the paper citation and license file too. The code should be organized cleanly under a src folder and be easy to run from a fresh checkout. Look up current docs online if you need to.